Here a short short tutorial how to add a new app to twitter:

1. Go to https://dev.twitter.com/apps/new and login if you are not logged in already
2. Fill out the following form:

So you should get the following:

3. Accept the “Developer Rules of the Road”, type in the captcha, and click on “Create your Twitter application” button.
4. Now you should see this page

5. Go to “Settings” and change the application type to “Read and Write” (and click on “Update this Twitter application’s settings” to save your change):

6. Go back to “Details”, scroll down, and create your access token by clicking “Create my access token”:

7. Now you have all tokens you need, both consumer tokens and both access tokens. The consumer tokens identifying your application and the access tokens allows your application to access your twitter account:

(The tokens you can see in the image are not vaild anymore of course.)

This how-to is helpfull if you want to use my twitter plugin for b3.